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For the following products we sell, could you advise us if there is no problem with the sales method of other sellers?

The above product is made by Manufacturer A and sold by Company B via parallel export from Japan to the United States. On this parallel export, Company B includes English manual with it that they have created on their own.

What we want to know is that if it is possible to prohibit other sellers from selling this product who don't include English manual with it by our including English manual with Company A's product just like Company B.

It is likely be beneficial to customers, but if it is possible to register the product as a new one like Company B by including English manual, then wouldn't many different sellers be able to register similar sales pages separately?

This is because Company B, using their customer contact form, threatened us by indicating their intention to "report a violation" if we continue to sell without including a similar manual.

By the way, Company B is not a manufacturer nor hold the intellectual property right.